<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        dge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            #d1 {
                width: 100px;
                height: 100px;
                margin: 25px 0px 0px 25px;
                overflow: hidden;
                background-color: red;
            }
            #d1 > div {
                margin: 25px;
                width: 50px;
                height: 50px;
                background-color: blue;
            }
            #d2 {
                width: 50px;
                height: 50px;
                margin-left: 125px;
                padding: 50px 0 0 50px;
                border: 5px solid green;
                border-radius: 5%;
            }
        </style>
    </head>
    <body>
        <div id="d1">
            <div></div>
        </div>
        <div id="d2">哈喽</div>
    </body>
</html>
